Intergovernmental Cooperation: Rational Choices in Federal Systems and Beyond. : Oxford University Press, 2009-08-01. Oxford Scholarship Online. 2009-09-01. Date Accessed 20 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199570607.001.0001/acprof-9780199570607>.
(2009-08-01). Intergovernmental Cooperation: Rational Choices in Federal Systems and Beyond. : Oxford University Press. Retrieved 20 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199570607.001.0001/acprof-9780199570607.
Intergovernmental Cooperation: Rational Choices in Federal Systems and Beyond. : Oxford University Press, 2009-08-01. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199570607.001.0001/acprof-9780199570607.
Bolleyer N. Intergovernmental Cooperation: Rational Choices in Federal Systems and Beyond. Oxford University Press; 2009. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199570607.001.0001/acprof-9780199570607. Accessed June 20, 2013.